Simon

I can replicate this crash but only very unpredictably - i.e. if I make a few chords, and toggle the invisibility on and off over and over again (perhaps mixing...

Looks good; it is also necessary to re-render when stem directions change. When the first note of a) is split from the group, for example, we get b). (The stem...

Very rarely seen in real life but possible. Excuse my gorgeous photography:  Not something I'd be in a rush to enable personally. But diagonal lines are useful for indicating...

Begin hook issue exists as https://github.com/musescore/MuseScore/issues/13653 with task https://github.com/musescore/MuseScore/issues/14209. @Tantacrul or @bkunda will have words of wisdom about the diagonal option.

I raised the beam-over-quarter issue separately: #16798 @iwoithe - if you'd like to work on it, just leave a comment there

Off the top of my head I can't think of any reason why you'd style start/continuation/end text differently, though I have no doubt that someone would be able to come...

Could you upload a score here where this happens (.zip it first)? I can't reproduce this myself at a first try (on Windows or Linux) but obviously it sounds serious.

This is a MusicXML file and I get an error saying it's corrupted when opening; so this crash may be related to that, and I'll need to leave it to...

Muse Hub issues are now being handled elsewhere, so will be closed here. If this issue is still valid, please raise it [here](https://musehub.zendesk.com/). You can link to this GitHub issue...

Couldn't reproduce this myself, but this visibility crash seems to be a very sneaky issue that manifests some times and not others.